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Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.

The official SI symbolic abbreviation is m·s^{−1}, or equivalently, m/s; although the abbreviation mps is sometimes used colloquially, but is incorrect according to the BIPM. Where metres per second are several orders of magnitude too slow to be convenient, such as in astronomical measurements, velocities may be given in terms of kilometres per second, where 1 km/s is equivalent to 1,000 metres per second; in popular, non-science literature kps is occasionally, and again incorrectly, used instead of km/s.

One metre per second is roughly the speed of an average person walking.

- = 3.6 km·h
^{−1}(exactly)

- ≈ 3.2808 feet per second (approximately)

- ≈ 2.2369 miles per hour (approximately)

1 foot per second = 0.3048 m·s^{−1} (exactly)

1 mile per hour ≈ 0.4471 m·s^{−1} (approximately)

1 km·h^{-1} ≈ 0.2778 m·s^{−1} (approximately)

1 kilometre per second is equivalent to:

- ≈ 0.6213 miles per second (approximately)

- ≈ 2237 miles per hour (approximate)

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Last updated on Saturday September 13, 2008 at 09:25:33 PDT (GMT -0700)

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This article is licensed under the GNU Free Documentation License.

Last updated on Saturday September 13, 2008 at 09:25:33 PDT (GMT -0700)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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